import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_VIEW_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 50000// request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent
    // config.headers['Content-Type'] = application/x-www-form-urlencoded; charset=UTF-8
    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['token'] = getToken()
      // headers: {
      //   'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
      // }
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data

    // 404后面判断数据存在与否.
    if (res.code !== 200 && res.code != 403 && res.code != 404) {
      Message({
        message: res.msg || 'Error',
        type: 'error',
        duration: 5 * 1000
      })

      // 500: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.code === 500 || res.code === 500 || res.code === 500) {
        // to re-login
        MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
          confirmButtonText: 'Re-Login',
          cancelButtonText: 'Cancel',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
        return Promise.reject(new Error(res.msg || 'Error'))
      }
      
      // 405: 用户不存在;
      if (res.code === 405) {
        return Promise.reject(new Error(res.msg))
      }

    } else {
      // console.log(res)
      // console.log(123456);
      return res
    }
  },
  error => {
    console.log('err' + error) // for debug
    Message({
      message: error.msg,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
